Postoperative Non-Echo-Planar Diffusion-Weighted Magnetic Resonance Imaging Changes After Cholesteatoma Surgery

Dhepnorrarat, Rataphol Chris; Wood, B. E.; Rajan, Gunesh

doi:10.1097/mao.0b013e31818edf4a

Cited by 99 publications

(137 citation statements)

References 18 publications

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“…Delayed postcontrast T1 spin-echo sequences improve the diagnosis of recurrent cholesteatoma and allow differentiation between scar tissue, which shows delayed enhancement, and cholesteatoma, which does not show delayed enhancement; conversely, inflammatory tissue displays early enhancement (7). However, these sequences do not provide the diagnostic performance necessary to eliminate the need for second-look surgery (7)(8)(9)(10)(11). Growing data suggest that DWI, particularly Half-Fourier acquisition single-shot turbo spin-echo (HASTE) DWI, yields better diagnostic performance for the detection of cholesteatomas (8,11).…”

mentioning

confidence: 99%

HASTE diffusion-weighted mri: reliability for detection of cholesteatoma

Ilıca¹,

Hıdır²,

Bulakbaşı³

et al. 2011

Diagn Interv Radiol

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mentioning

confidence: 99%

HASTE diffusion-weighted mri: reliability for detection of cholesteatoma

Ilıca¹,

Hıdır²,

Bulakbaşı³

et al. 2011

Diagn Interv Radiol

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“…In T1 and T2 weighted MR imaging, cerebrospinal fluid and arachnoid cyst have similar views with the cholesteatoma. However, the fluid attenuated inversion recovery (FLAIR) and on diffusion-weighted images occurs as hyperintense [10] (Fig. 3).…”

Section: Discussionmentioning

confidence: 99%

“…Furthermore, these approaches to PA may not be possible when there is poor pneumatization of the temporal bone [10].…”

Section: Discussionmentioning

confidence: 99%

Does Endoscopic Surgery Reduce Recurrence of the Petrous Apex Cholesteatoma?

Kumral

Uyar

Yıldırım

et al. 2013

Indian J Otolaryngol Head Neck Surg

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The aim of this study is to present the clinical symptoms, complications and treatments of the petrous apex cholesteatoma and is to describe the current role of oto-endoscopy. This was a retrospective non-randomized study of 14 petrous apex cholesteatoma surgeries performed between 1994 and 2012. Petrosectomy was performed according to the location of the cholesteatoma, hearing level of the patients and facial nerve function. Oto-endoscopy was used in the petrous apex and the cerebellopontine angle for residual cholesteatoma. 14 patients, seven were men and seven women were included in this study between 1994-2012. The most common symptom was hearing loss (85.7 %) and tinnitus (50 %) at the presentation. During the surgeries, it was observed that cholesteatoma involved most frequently facial nerve, dura and labyrinthines. Labyrinthectomy, middle cranial fossa approach and petromastoidectomy was performed to these patients. Four of six patients operated without the endoscope assistance between 1994-2006 had recurrences after the operation. These patients were re-operated and in the follow up, there was no recurrence. In the endoscopy assisted surgery, there was no recurrence observed (significance level p = 0.014). The most common complication after the surgery was hearing loss (42.8 %) but it was not significant after surgery (p [ 0.05). The petrous apex and mastoid cavity was obliterated with fat tissue in eight patients while six patients were exteriorized to follow the recurrence and it was insignificant in recurrences (p [ 0.05) Conclusion: Endoscope-assisted surgery allows to remove residual the cholesteatoma around the carotid artery, dura and facial nerve in the petrous apex resulting in less invasive surgery and less recurrence in blind spots.

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“…5 In another paper, the same group concluded that '[turbo spin-echo] ([halfFourier acquired single-shot turbo spin-echo]) [diffusionweighted] MRI is emerging as a cost effective, noninvasive alternative to second-look surgery for detection and screening for cholesteatoma in pediatric patients'. 6 In their study of a paediatric cholesteatoma series, the group led by Plouin-Gaudon (Centre Hospitalier de Valence) and Bossard (Hôpital Privé Jean Mermoz, Lyon, France) reported that '[half-Fourier acquired single-shot turbo spin-echo] diffusion-weighted MRI revealed a cholesteatoma in all true-positive cases.…”

mentioning

confidence: 99%

“…Dhepnorrarat et al, 5 in Australia, examined the halfFourier acquired single-shot turbo spin-echo sequence, assessing post-operative changes (and not the size of cholesteatoma detected) in MR images compared with 'second-look' surgery. Their work found encouraging results for this sequence in detecting cholesteatoma within post-operative ears.…”

mentioning

confidence: 99%

Non echo planar, diffusion-weighted magnetic resonance imaging (periodically rotated overlapping parallel lines with enhanced reconstruction sequence) compared with echo planar imaging for the detection of middle-ear cholesteatoma

Foer

2011

J. Laryngol. Otol.

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Non echo planar, diffusion-weighted magnetic resonance imaging (periodically rotated overlapping parallel lines with enhanced reconstruction sequence) compared with echo planar imaging for the detection of middle-ear cholesteatoma J Laryngol Otol 2011;125:376-80 Dear Sirs, We read with great interest the above paper by Kasbekar et al. 1 In the conclusion of this paper, it is stated that 'Casselman and De Foer et al. continue to report on their success with their particular non echo planar imaging sequences. Further studies should assess the reproducibility of results, using Casselman and De Foer and colleagues' protocols and MRI machines'.Our group was the first to describe, in 2006, the halfFourier acquired single-shot turbo spin-echo diffusionweighted magnetic resonance imaging (MRI) sequence, and to compare it to the routinely used echo planar diffusion-weighted sequences, 2 both in patients prior to first stage surgery 3 and in patients prior to 'second-look' surgery for residual cholesteatoma. 4 In this last, 2008 paper, we concluded that second-look surgery could be replaced by the use of half-Fourier acquired single-shot turbo spin-echo diffusion-weighted sequences.Despite the above-mentioned conclusion, it should be noted that several groups have in the meantime reported similar findings in peer-reviewed journals.Dhepnorrarat and Rajan's group at the University of Western Australia, Perth, Australia, concluded in 2009 that '[turbo spin-echo diffusion weighted] MRI holds a great promise in screening for cholesteatoma as an alternative to exploratory second-look surgery'. 5 In another paper, the same group concluded that '[turbo spin-echo] ([halfFourier acquired single-shot turbo spin-echo]) [diffusionweighted] MRI is emerging as a cost effective, noninvasive alternative to second-look surgery for detection and screening for cholesteatoma in pediatric patients '. 6 In their study of a paediatric cholesteatoma series, the group led by Plouin-Gaudon (Centre Hospitalier de Valence) and Bossard (Hôpital Privé Jean Mermoz, Lyon, France) reported that '[half-Fourier acquired single-shot turbo spin-echo] diffusion-weighted MRI revealed a cholesteatoma in all true-positive cases. Moreover, no false-positive nor false-negative cases were found'. Furthermore, they were the first to fuse non echo planar diffusion-weighted images and high resolution computed tomography (CT) images in order to precisely localise cholesteatomas. 7 Huins All the above-mentioned papers used and/or discussed extensively the half-Fourier acquired single-shot turbo spin-echo diffusion sequence, and, in our opinion, reported similar results and findings to our group, confirming our reported findings.

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Postoperative Non-Echo-Planar Diffusion-Weighted Magnetic Resonance Imaging Changes After Cholesteatoma Surgery

Abstract: TSE DW MRI holds great promise in screening for cholesteatoma as an alternative to exploratory second-look surgery.

Cited by 99 publications

References 18 publications

HASTE diffusion-weighted mri: reliability for detection of cholesteatoma

HASTE diffusion-weighted mri: reliability for detection of cholesteatoma

Does Endoscopic Surgery Reduce Recurrence of the Petrous Apex Cholesteatoma?

Non echo planar, diffusion-weighted magnetic resonance imaging (periodically rotated overlapping parallel lines with enhanced reconstruction sequence) compared with echo planar imaging for the detection of middle-ear cholesteatoma

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